/* prepare the lsrcClient class (initiate the soapClient, set sid if needed)
*/

$testclient->prepare(37755);

/**
* set user and password (only needed, when not set in the client class directly)
*/
$testclient->user = 'admin';
$testclient->pass = 'bf8rnsfj';

/**
* set the path2wsdl (only needed, when not set in the client class directly)
*/
$testclient->path2wsdl = 'http://localhost/limesurvey/admin/remotecontrol/lsrc.server.php?wsdl';
/**
* call the function to create a survey
*/

As stated at our manual the LSRC feature doesn't work smoothly at the latest version:
"The latest stable release of Lime Survey Remote Control is 1.87 running on PHP 5.2. Efforts are underway to bring LSRC up to date with the current release and this page will be updated when that has happened. Until that time please continue reporting bugs via the bugtracker(external link) and please be patient with us!"